We use a lot of energy at home and it costs us a lot. To save energy, we should use electricity, water and gas economically. For example, we should turn of the lights and air conditioners when we go out. Next, we should use electrical equipment which are energy-saving. Using lights and fans that have low capacity, or using equipment which reserve electricity. Not only do these help us to save money but also they work effectively. In short, we need to save energy so that energy isn't run out and continues to serve human's life.